Receptacle and closure therefor



June 13, 1939. w LOCKHART I RECEPTACLE AND CLOSURE THEREFOR Filed March 14, 1935 INVENTOR. MLL/AM perm/ART.

F 111's ATTORNEYS.

Patented June 13, 1939 UNITED sures PATENT OFFICE Cornell Securities Ohio, a

Cleveland,

'olllelaware application Morel: 14, 19:5, senu No. 11,091 1 claim!- (01. 220-61) My inventon is an improvement in receptacles such as metallic barrels or shipping drums of the full removable head type and relates more particularly to a clamping ring and operating med:-

5 anism ior removably securing the head or cover on the receptacle. 7

I am aware that heretofore expanding and/or contracting link and lever operated clamping rings have been devised and used to clamp a cover upon the open end of a metallic drum or other container. Such devices were first contributed to the art, so far as I am aware. by Vernon E. Cornell as illustrated in his Letters Patent Nos. 1,792,278, 1,792,279, 1,792,280 and 1,792,281 all dated February 10th, 1931.

. The present invention is an improvement upon such devices and one of the objects thereof is to provide an operating mechanism for expanding and contracting the ring, which ailords even greater ease of operation than thoseheretofore used.

Another object of the invention is to provide an operating lever fulcrumed about a pivot which is movable with respect to the ring or receptacle.

A further object is to provide a floating type of lever, that is, one pivotally connected through suitable links or their eq 'valents to the ends of the ring for expanding and/or contracting the ring.

Another object is to exert predetermined closing pressures on the drum and cover and to more uniformly distribute these pressures or forces throughout the extent of the ring.

Other objects and advantages of the invention will become more apparent from .the following description of one embodiment thereof, reference being made to the accompanying drawing in which likereference characters are employed to designate like parts throughout the same.

In the drawingz- Figure 1 is a top plan view of the clamping device in use; r

Figure 2 is an enlarged section taken on line 2'-2' of Figurel;

Figure 3 is a fragmentary plan view of the ring showing the same in closed or contracted position to clamp the cover on the receptacle in sealed fluid tight relation;

Figure 4 is a view similar to that of Figure 3,

but shows the ring in open'or expanded position,

as in removing the cover from the receptacle, and Figure 5 is an elevation of the ring taken in the direction of the arrows on line 5-5 of Figure 3.

Referring now more particularly to the draw- 66 ing, the barrel or drum is indicated at I. '11:: up-

per open end of the container isformed with a peripheral bead 2. A cover 3 comprising a cupped or depressed member, having a peripheral upwardly and outwardly extending flange I, is supportedbythebeadiinsuchamannerthatthe 5 cupped portion of the cover may be telescoped for a short distance within the open end of the container, as illustrated in Figure 2. It will be noted that a portion of the flange 4 is of arcuate cross section to conform with the approximate curvature of the upper surface of the bead. A packing 5 consisting of an annulus of any suitable packing material, such as flexible rubber tubing or cork,

is interposed between the flange l and the bead.

According to the present invention, I have pro--, vided an extremely simple and eflicient means for removably securing the cover on the receptacle or container to efiect a fluid'tight seal between the same by exerting a substantially uniform and firm pressure along' thecover flange and bead in p a direction substantially el'to the axis of the container.

Such means preferably includes a transversely split, channeled clamping ring 6 of substantially U-shaped cross-section and which 5 capable of being contracted and expanded by suitable means. In the form illustrated the upper and lower flange and bead engaging walls respectively of the ring extend in substantially parallel planes and engage thecover flange and head of the container to press the same together tightly when the ring is contracted; However, it is to be understood that the ring and receptacle open end may be so designed that the; cover will be pressed into a tight seal 7 with a shoulder at the receptacle open end when 5 the ring is expanded.

Upon contracting the type of ring herein illustrated it will be seen that the cover flange will be. tightly pressed against the packing 5 and the supporting head 2 under a substantially verti- 40 cal pressure. 7

The ring is provided at its ends with suitable lugs, plates, or the like, I and I, which are preferably welded to the adjacent ring ends respectively and extend inwardly of the ring to movably 45 support suitable means for contracting and expending the ring.

.A simple toggle connection is provided between the platesv I and i and preferably consists of an operating lever 5 and a pair of links i. and H 0 connecting the lever with the plates 1 and 8 respectively. More specifically, the lever 9 consists of a stamping or forging curved to fit within the inner confines of the receptacle when the ring is contracted. ,The lever is pivotally connected at s:

one end with an end of the link II as at l, the other end of the link Ill being pivotally connected with the plate I asat II. The second link ll pivotally connected at one end with the lever 9,; as at I 3, is pivotally'connected'at its other end with the plate 8' as at ll. It is preferred in practice to arrange the links it and I I so that they will lie and operate in' planes on opposite sides of the plane of the lever 9, thus permitting free overlapping oflthe same in operation, the conservation of materials, and more positive alignment of the ring ends during contraction'oi. the

comprising 9. depending flange I6 extending a' short distance below the plane of the plate I to formed in versed L-shaped S1017 cated in Figures 1, 3 4, to receive the pin or pansiomof is charged with material it 7 efiect a maximum of closing pressure to obtain a fluid tight seal. By my invention these results and arrangement of serve as a stop for the handle lever 9 when the same is in the position shown in Figure 3. As the handle closely approaches this position it is depressed toward the cover until it passes beneath the stop It. When released it will abut the inner surface of the stop to hold the ring fully contractedd Registering openings I! and I8 are the latch and lever respectively to receive a wire seal when desired.

It is to,be noted that by my invention a very simple locking or clamping device is easily provided. Its simplicity insures low cost of production, yet 'the device is extremely rugged and strong, and is remarkably ,easy to operate. This ease of operation is primarily due to the toggle arrangement wherein the lever is of the floating type, that is, it is not fixedly pivoted to one of the lugs but is floated on members connecting the lugs with the lever. Due to this arrangement also, the device becomes self-locking as the lever approaches its limit of movement to contract the ring. In so doing the pivot 9' passes a dead center line connecting the pivot points ll and M.

It is also to be noted that the operating mechanism may be selectively set or adjusted to vary the degree of contraction or--expansion oi-the ring. This is accomplished by providing a rein the bracket I as indipivot I 4 of the link. This sl'ot. provides a pinrality. of sockets or seats 2| and 22 for this purpose and an imaginary straight line passing from the axis of the pin I! through the axis 01' the pin 10, when seated in the socket II, will define a chord of shorter length than such a line passing throughthe axis of the pin ll when seated in the socket 22. Therefore the contraction and exthe ring maybe selected conveniently. It isrdesirable in shipping thediiih'isempty to lock the cover-in place securely but not so flrmly as to put a set in the gasket 5. Then whenthe is desirable to arereadily accomplished.

1 Various changes in the details of construction' may be made without parts departing from the spirit of my invention hr the scope of the appended claims.

I claim:

'1. A clamping device for ru ncvabl'y securing a f split channeled adjacent the ends of" the ring,

cover upon a barrel, said device comprising a split channeled ring, inwardly extending lugs adjacent the ends of the ring, and means for contracting and expanding the ring, said means including a linkpivoted at one end to one of said lugs, an operating lever pivotally connected adjacent its end with the other end of said link, and a link pivotally connecting the other lug with another portion of said lever-whereby said links will be caused to overlie one another and a portion of said lever when thering is flexed to one of its extreme positions, but .not when the ring is flexed in an opposite direction.

2. A clamping device for removablysecuring a cover upon a barrel, said device comprising a split channeled ring, inwardly extending lugs adjacent the ends of the ring, and means for contracting and expanding the ring, said means injaoent its end with the other end of said link, and a member pivotally connecting the other lug with another portion of 'said lever, said connecting member being shaped to engage the cover of a receptacle in contracting the ring to exert a substantial pressure thereagainst.

3. A clamping device for removably securing a cover upon a barrel, said device comprising a split channeled ring, inwardly extending lugs adjacent the ends of the ring, and means for contracting and expanding the ring, said means including a link pivoted at one end to one of said lugs, an operating lever pivotally connected adiacent its end with the other end of said link, and a member pivotally connecting the other lug with another portion of said lever, said connecting member being shaped to engage the cover of a receptacle in contracting the ring to exerts substantial pressure thereagainst, said member having a rounded cam-like portion to' engage said cover.

4. A clamping device for removably securing a cover upon a barrel, said device comprising a split channeled ring, inwardly extending lugs adjacent an-operatingmember pivotally connected adjacent itsinner end with the other end of the first named link, saidzother end of the second link having pivotal connection with another portion oi the operating member, whereby upon rotatlon oi the said member to full ring cgntract'ed position to clamp the cover on the'barrel, the pivot points of the links will be positioned with reference to the operating member tending .to retain the ring in contracted position.

5. A clamping device for removably securing a cover u chann ring, inwardly extending lugs adjacent the ends of the ring, and means for contracting and expanding the ring, said means including a link pivotally connected to and adjacent each end 01' the ring, and a rotatable actuating memberpivoted at points on opposite sides of its ron a barrel, said device comprising a split tative center to the tree-ends or the respective links.

6. A clamping device for removably securing a cover upona barrel, said device comprising a ring, inwardly extending lugs and means for contracting. and-expanding the 8, said means including a link pivotally connected to and adjacent each end or the ring, and a rotatable acat points on opposite tasting member-pivoted sides of its relative center to the tree of the respective links, one of said links being shaped to engage the cover of a receptacle in contracting the ring to exert a. substantial lateral pressure thereagainst.

'i'. A clamping device for removably securing a.

cover upon a barrel, said device comprising a split channeled ring, inwardly extending lugs adjacent the ends of the ring, and means for contracting and expanding the rinmacid means including a link plvotaliy connected to and adjacent each end of the ring, and rrotatable actuating member pivoted at pointson opposite sides oi its rotative center to the free ends of, the respective links; one of said links being shaped to engagethe cover of a receptacle incontracting the ring to exert a substantial lateral pressure th reagainst, said link engageable with the cover having a camlike portion for such -mcnt.

WILLI LOCKHA T. 

